I bought these to slide or clip onto the underside of chair legs. The old ones are really worn out and scratching the floor in some places. They went in fairly easily (just tap lightly with a hammer) and fitted perfectly. They don't stick out over the edges or anything like that; looks very seamless. We are happy with them. This is for my basement kitchen table so I don't have a long term reaction to the durability but it looks like they will hold up well.